The country is poor in minerals.

这个国家矿物不丰富。

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Fats and sugar are very rich in energy but poor in vitamins and minerals.

脂肪和糖富含热量，但缺乏维生素和矿物质。

《柯林斯英汉双解大词典》

Most rainforest soils are thin and poor because they lack minerals and because the heat and heavy rainfall destroy most organic matter in the soils within four years of it reaching the forest floor.

大多数雨林土壤都很贫瘠，因为它们缺乏矿物质，而且高温和强降雨会在到达森林地面后的4年内破坏土壤中的大部分有机物。

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